Brush.



' G. BURGER.

- 1,061,814. Patented May13,1913.

CHRISTIAN BURGER, OF NUREMBERG, GERMANY.

BRUSH.

Specication of Letters Patent.

Patented Mayas, 11913.

Application filed June 30, 1910. Serial No. 569,838.

To all whom t may concern:

Be it known 1that I, CHRISTIAN BURGER, a citizen of the Empire of Germany, residing at Nuremberg, in the Empire of Germany, have invented a new and useful Brush, of which the following is a speciiication.

The known brushes, in which the ends of the bristles are vclamped between parallel holders or holding strips, either smooth or longitudinally grooved and tongued o-n both sides, present the defect, that since the bristles are spread in layers of uniform` thickness between the several holders,

straight rows or long bunches of bristles are formed without spaces ywhich leave channels o-r gaps between them near the holders and touch one another at their free ends, so that the brush does not possess a sufficiently large absorbent capacity and when such a vbrush has been used for a certain time long gaps will appear between the several bunches of the bristles.

My invention relates to an improvement in brushes, of the type described in which the said defect is removed and the brush is rendered somewhat similar in appearance to ordinary brushes with single bunches of bristles fastened in holes in the back.

The invention consists essentially in providing bristle holders Vor holding strips which are out out to form recesses at both -sides and at equal distance from each other.

The remaining broadportions of the strips accordingly form projections which are at a right angle to the remaining thin portions of the strip and located opposite each other. These bristle rholding strips are so arranged and assembled that the projections of one strip reach into the recesses of the adjoining strip and vice versa. By virtue of this arrangement peculiarly shapedv channels are formed one between each pair of adjoining strips'. These channels are purposed to receive the bristles which are clamped by the holding strips and forced thereby chiefly into the recesses. The clamped end portions of the bristles thus form an almost serpentine or waved continuous layer between the strips that adj oin each other with most of the bristles within the recesses. This arrangement of the bristles between the recessed holding strips imparts great absorbing capacity to these brushes.

I will now proceed to describe my invenrecesses between them.

tion with reference to the accompanying drawing, in which- Figure l is an elevation of the new brush` the back securing plate being detached and partly shown in section, and Fig. 2 is a plan view of the same, the back securing plate being indicated by dotted lines.

The back A is made from several juXt-aposed holders or holding strips a, @1,02, a3, a4 as, of which the eXtreme holders a aud as are smooth on one side and provided with parallel transverse projections or teeth c c on 4the other side 'leaving thus recesses between the adjoining projections. All the remaining holders al, a2 al are shown to be provided on bot-h sides with ,opposite projections c c. The projections c c of any holder arelocated in the corresponding recesses of the adjoining holders forming thus a peculiarly shaped channel between each pair of holders.

The brush may be composed in the followlng manner: One eXtreme holder L is placed with its smooth side on some support, then a layer of bristles d is laid on it, care bein taken that the ends of the bristles Z are fins i with the side of the holder a. It will then be found, that the bristles l mostly` collect in the recesses between the projections c c. N ow the following holder f1.1 is put on and by pressing it downward its projections 0 o will push some o-f the bristles upward into the A fresh layer of bristles al is put on and the following holder a2 applied. In this manner the work is continued until a sufficient height for the required'width of the brush is attained and the last holder a8 is put on. The several holders a, al as with the layers o-f bristles d between them are now pressed together and the resulting brush is turned with the bristles upward, after which the back A so formed is dipped into warm pitch or glue or the like. The brush so formed is then connected with a back securing plate b of any approved construction.

As is clearly shown in Fig. 2 the clamped inner ends of the bristles l within the wave channels between each pair of adjoining strips o-r holders form a like waved continuous layer with most of the bristles in t-he recesses while the opposite ends of the bristles are spread out as shown in Fig. l so that the brush, when lookedat from a side, is somewhat similar to an ordinary brush, in which single bunches of bristles are fastened in holes of the back. The new arrangement of the bristles between the holders has the advantage of imparting to the brush so formed great absorbent capacity, since between any four opposite bunches of bristles there are intermediate spaces which are largest near the clamped inner ends of the bristles formed in contradistinction to the continuous gaps in the old brushes.

The holders or holding strips a, al as may be made from any suit-able material and the arrangement described of the bristles between the holding strips may also be applied to other brush-wares.

I claim:

l. Abrush of great absorbent capacity,com prising a brush back composed of a multiple of bristle holding strips, each of the strips, except the two outside strips, being made with alternating wide and narrow portions the wide portions being formed by opposite projections from the/body of the strip and the said projections from one strip extending into the depressions of an adjacent strip forming thus a wave like channel between each pair of adjoining strips, and a continuous layer of bristles clamped with their inner ends in each channel leaving spaces near said clamped portion of the peculiar shape of the bristle holders which gradually decreases as the bristles spread out.

2. A brush of great absorbent capacity, comprising a brush back composed of two outer holding strips each smooth on the outside and made with alternating wide and narrow portions on the inside, and a multiple of inner strips, each of the inner strips being made with alternating wide and narrow portions the wide portions being formed by opposite projections from the body of the strip and the said projections from one strip extending into the depressions of an adjacent strip orining thus a wave like chan nel between each pair of adjoining strips, and a continuous layer of bristles clamped with their inner ends in each channel leaving spaces near said clamped portion of the peculiar shape of the bristle holders which gradually decreases as the bristles spread out.

CHRISTIAN BURGER. Witnesses:

ARNOLD ZEISSBARTH, W. LINTZMEYER.

vCopies of this patent may 'be obtained for ve cents each, by addressing the Commissioner of Patents, Washington, D. C. 

